Primality proof for n = 100517:

Take b = 2.

b^(n-1) mod n = 1.

1933 is prime.
b^((n-1)/1933)-1 mod n = 16847, which is a unit, inverse 34158.

(1933) divides n-1.

(1933)^2 > n.

n is prime by Pocklington's theorem.